apngs are compressed and made static

[alnmy]

Using a supported version?

• [X] I have searched searched open and closed issues for duplicates.
• [X] I am using Signal-Desktop as provided by the Signal team, not a 3rd-party package.

Overall summary

If you send an apng, it gets compressed and becomes static.

Steps to reproduce

1. Download a GIF
2. Convert to apng on ezgif
3. Send this apng on Signal

Expected result

The animation stays intact, such as if it were sent from the Android client

Actual result

The image is compressed and loses its animation

Screenshots

No response

Signal version

7.24.1

Operating system

Linux "Freedesktop SDK 24.08 (Flatpak runtime)"

Version of Signal on your phone

7.18.2

Link to debug log

No response